Official holidays in 2023 (in addition to the special leave during the annual closure):
- Monday, 2 January
 (compensation granted for 1 January, New Year)
- Friday, 7 April
 (Good Friday)
- Monday, 10 April
 (Easter Monday)
- Monday, 1 May 
 (1 May)
- Thursday, 18 May
 (Ascension day)
- Monday, 29 May
 (Whit Monday)
- Thursday, 7 September
 ("Jeûne genevois")
- Monday, 25 December
 (Christmas)
- Tuesday, 26 December 
 (compensation granted for 24 December, Christmas Eve)
- Friday, 29 December 
 (compensation granted for 31 December, New Year’s Eve)
Annual closure of the site of the Organization during the end-of-year holiday period:
The Laboratory will be closed from Saturday, 23 December 2023 until Sunday, 7 January 2024 inclusive (without deduction of annual leave). The first working day in the New Year will be Monday 8 January 2024.
